pmizell, mine is a '91 as well. Thanks for the great reply with diagram. I guess there is only one o-ring at that location. Also, I'm glad I wasn't the only one that thought the fastlane ad was misleading. I'll go to the store tomorrow and buy a new o-ring. I hope it makes a difference. At least it will give me peace of mind when I start the car again for the first time.

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1991 190e 2.6 190,000mi